SCIENTIFIC ABSTRACT YATSENKO, S.P. - YATSENKO, V.A.

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• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001962310004-5
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 19, 2001
• Sequence Number: 4
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

----- -------
PRESSMAN, A,Ya,j YATSENKO, SOP#
Possibility of measuring the "-mperature of upper atmospheric
layers by the use of a narrow tube. Geomag. I aer. I no.l.*/+9-53
Ta-F 161. (MIRA 14:7)
1. Inatitut prikladnoy geofiziki AN SSSR.
(Atmospheric temperature)
a,-_Zmz -MM M-
01",
f

S/56o/6 i/ooo/007/005/010
E032/E!14
AUTHOR: Yatsenko, S.P.
TITLE: Ionization of gases carried by a satellite into the
upper layers of the atmosphere ,
PC-'jZ10D ICAL: Akademiya riallk SSSH. jSkijjsst;vvnt,.yy_~ spiitnilki 4emli,
No.7, Moscow, 1961, pp.60~6'2 - t Plate
TLXr V.G. Istomin (Ref.l: this j--oirttal, No. 2., izd-re,
AN SSSR, 1958, P. 32) has reported that during the first few hours
rifter the launching of the third Sov-et artificidl Farth saLcllite
!h-. radio frequency mass spectrometev in the satelItte recorled
Lowl with mass number 18, which wer,~ -dentified -with 11?0+. It was
Ir.Oncluded that these lons are a3r,:Pciworl ivich contaminati~-#n of th'C
iatellit6. The present paper Is -41th th': pl-ob-1,2111 as to
what was the reasonfor `-he ionizat j,,ji*t rJv. molecuies viijitted
from the surface of the satellitc. Tc.- k'Y-i:riri iiitb, j.)hoto-ionization
-an be excluded because the mass r,.the of the
particular part of the orbit was in 41he Lb.,at1vjr rif the safcJlite.
Other mechanisms, such as ionization by ra3t el,~ctrons drLrl j)r-Ct0n_S,
iiave also been explored, without posiT The present
~.~.rd 1/ 2

26,661.
Ionization of gases carried by ... s/56w/6 1 /000/007/005/010
E03_'/EII't
author considers the main reason for tfie ioniza t j on is cha rge
~:rans for. During this process the newly.formed ion--4 ars?, at least
to Eoinn extent, scattered. This means that the insti-timent records
finly tbone particles which have boon iicat terod 1,~y colli-s ion with
atmospheric ions. Since the chartge in the inn concontration with
altitude was by less than one order of (K.I. GrIngauz,
Ref.4: Dokl. AN SSSR, V.120, 12341 1938; this jr;Urnal, No. 1,
izd.-vo AN SSSR, 1958, p. 62; K.I. Ciringauz, V.V. Bezrukikh,
V.D. Oz-erov, this journal, No. 6. 1961, p. 63) -it follows that the
lon current associated with the outgavdng shouLd rAlso change by
less than one order of magnitude. Detailed conaideration of the
geometrical and dynamical factors involved has led the present
author to the conclusion that the charge transfer mechanism is in
fact the correct one since the ion current maxima predicted on the
basis of this mechanism are in good agreement with the observed
maxima.
There are, 6 figures and 5 Soviet references,
Card 2/2
0
K.,

42139
3. 15~5_0 S/M3/32/002/00210151017
1046/1246
AUTHORS: Danilov, A. D. and k
TITLE: On the possibility of existence of high electron concentrations in the night atmos-
phere of Venus
PERIODICAL: Geomagnetizm i acronomiya, v. 2, no. 2,1962, 363-364
TEXT: The l(km radio emission of Venus, su Ative of a powerful ionosphete (high electron concent-
rations), is explained by analogy with the nocturnif ionization in the terrestrial r-region, namely be intfo-
ducing streams of soft electrons as an ionizing agent supplementary to solar radiation. The most important
English references are: C. H. Mayer, T. P. McCulloug h, R. M. Sloanaker, Aph. J., 1959, 127,
no. 1, 1 Report to the XIII General Assembly URS1, London, 1960; D. E. Johnes, Planet. Space Sci., 1961, 5,
no. Z 166.
ASSOCIATION: Institut prikladnoy geofiziki (Institute of Applied Geophysics)
SUBMITTED: February 13, 1962
Card 1/1

/005/004/010
5/203/62/002
/1246
T,046
Ve
tions in -the
concentra
ya-tsenxo' on Of A-on.
distribUti 3_8qq
2 no. 5, 1962,
TITLV,'- at.,osphere 1 V. two
Vii t 11
ti 'a j aer,040W ,,,,e are divided into invol-
GeOvIa6l" etiuoBpl recOmb-Inatiol
.1 O-D-1 tary lized by proces-ses le-
O-aere
a Plane ,eutra ion change ,al simp
in 1--ior'le Onventior - atmos.
Jjj x1eut _3.j%ea in is cc I r1a'Ic . -
Th e 3.pman isotfle ioni-
c, V17" ra Ch" ntS of Ein mat3.c
.5se +-ions '4'Plying POT-je tdd to monochrO di ctrl 0
ideu a Coln altitude
jectronsi 0 a r t i c I ensd ' I I sub~'~c
e ividX11 01-lowirig
re-atru -t to I osilio](19 the f
V-Ing- ~ atmen . al COMP tu-Ins
tr6 t. c eallc author 0-b
all
of con5~. at I the .ses of ions:
al. on
a Yj 0 01 - z -'. ey-*p
zing VIL t et rj. - R
r
tior, fo e ~I L
AS
S UB.
Carc card
gf.
MOV

YATSENKOJI S.P.
Ionosphere of Venus (USSR)
Report submitted for the 4th International Space Symposium (COSPAR)
Oa~saw, 2-12 June 63

3/64/002/002/0276/0279
ACCESSION NR: A24034799 5/029
AUTHORt Danilov A, D,; -,'K~~senko.P
TITLE:, Experimental investigation of.constants of iodic exchange
processes in the ionosphere
ISOURGE; Koomicheakiye issledovaniya, V. 2, no, 2j 1964, 276-279
TOPIC TAGS: geophysical rocket, massIspectrometer, radio frequency,
VV device, ion reaction, gas molecule, mass spectrum, ion stream,
ion formation
ABSTRACT: on 18 October 1962 a geophysical rocket-rooe to a height
of 500 km over the territory of the USSR. This rocket carried a
Imass spectrometer of radio frequencies and a VV device (air outlet)
1from which air escaped at a definite time near the mass spectramfter.
!The VV device consisted of many capsules which were opened gradually,
IThe reason for launching such:a rocket was to check the reaction be-
ftween the ions 0+ and N+ and the gas molecufas Ok and N2 discharged
fio'm the capsul" of the VV device* Three kinds of reactions were
Card Lt2

ACCESS ION NR: AP4034799
assumed. Spectra obtained by the mass spectrometer recorded 02t
and some traces of NO+ ions, Ions of mass 30(NO+) could be recorded
at the sensitivity limit of the mass spectrometer, but ions of mass
28(N2+) were not recorded at all. An attempt has been made to eval-
uate the ratios of ion streams of 30 and 28 messes 28 and 30 and the
velocities at which the reactions procped. The formation of NO+ ions
proceeds slower than-the formation of 02+, and the formation N2+ ions
,occurs with about the same speed as that of 02+. Comparison of the
results,obtained with those of Western scientists and those of the
authors obtainad by.laboratory experiments shows considerable dis-
agreement. OrLg. act, has& 6 formulas and I figure,
.ASSOCIATION: none
SUBMITTEDt 020ct63 DATE-ACQ% 20May64 ENCLv 00
SUB CODE: 4S NO REP SOVi 008 OTHERs 005
16,d 2/2
L
"A

~"5(4)
AUTHORS:
TITLE:
PERIODICAL:
ABSTRACT:
Card 1/3
SOV/78-4-4-27/44
Yatsenko, S. P., Demenev, N. V.
Investigation of the Precipitation ~f Gn.11ii, FIVM
Alkaline Solution, Daring Cai~.)oaizatioll
deniya gidrata okisi galliya -1z shchelochnykh rastvcrc-~~ pri.
karbonizatsii)
Zhurnal neorgardaheskoy khimii, 1959, Vol 4, Nr 4, pp 869-876
(USSR)
The authors investigated the variation of the pH value of
alkalira gallate dolutions during-the precipitation cf aallium
hyzL-w.-Me with*carbonic acid at 600. Galliur hyd_roz~.dr;
precip3.ta..-ed from an alkaline gallate solution accordIng to
-the following reaction:
2GaO. + 2H 30"' 1, Ga20 3* 3H20 M
The reaction rate is expressed by the following equation:
dc GaO_
2_ 2 2 +
dt 'GaO_ ' 'H 0 -(2)
2 3
At a constant pH value of the solution the equation (2) adopts

SOV/78-4-4-27/44
In-,restigation of the Precipitation of Galli-,, Hydroxide from Alkaiine
SolutionE
this form, deGao-
--- I . (K 'c2 2 2
dt H 0 +)a Gao- = K.0 G110- 0A
'1 2 2
The solubility of galliui. -,hyErwida, in a sodium gallate ailuLiLm
of an ionic strength of 1.1-1.2 ac a pH value of 9-45-9.65
is intensified with increasing sodium carbonate content. The
dependence of the activity coefficient of bicarbonate and
carbonate ions on the ionic strength of the solution waL in-
vestigated a-b 250; the results are given in figure 1. With the
introduction of carbon dioxide into the gallate solution only
the pH valu.6 decreases at the beginning. At a certain pH value
the hitherto clear 6olution begins to grow turbid. This pH
value during the occurrence of turbidity is a linear function
of the absolute temperature, which in the temperature rarge
of 20-600 follows the empirical equation:
2924
pH = - + 2-32 (16)
T
Card 2/3 The course of titration of the gallate solution with carbcr-f~;
-----------

SOV/78-4-4-27/44
Irnresti,-ation of the Precinltaticn of Galliu- Jydra:ide ?rom Alkaline
ac1d is represented In figure 4. Figure 5 contains the pre-
cipitation of gallium oxide hydrate from the gallate solutio-a
at a constant pH value. The results of chemical analysis of
gallium oxide hydrate obtained from gallate solutions with
ca-z-bonic aciJ are given in a table. Another table shows zhe
reprodl.;oibil�ty of the precipitation of gellium oxide hydrate;
a third table gives the differences between the experimental
values of gallate ion concentration as well as the val-,1e.-
computed from the amount of absorbed CO 2' There are 6 figures,
3 tables, and 22 references, 8 of which are Soviet.
ASSOCIATION: Urall~akiy fillial Akadem-ii nauk S3SR institut khimii (Ural-
n t
Branch of --he Academir of Sciences USSRt Chemical I B
,SUBMITTED: January 30, 1958
Card 3/3
1. MW N
V
~W V

5(2)
AUTHORSs
TITLEt
PERIODICAL:
ABSTRAM
Card 1/2
SOV/78-4-6-37/44
Yatsenko, S. P., Demenev, N. V.
'Investigation of the System Gallate - Carbon Dioxide - Water
(Issledovaniye sistemy gallat-uglekislota-voda)
Zhurnal neorganicheskoy khimii, 19599 Vol 4, Nr 6,
pp 1437 - 1442 (USSR)
The solubility in the systems Ga2 03-11a20-H20 and Ga20 3-Na2O-H20
was investigated at room temperature (20+0.50). The system
Ga203-Na 20-H20 was investigated in the concentration region
of 15.5 - 155 g11 sodium oxide. The results of the solubility
determinations are given in table I and in figures 2 and 3.
The solid phase in the system has the composition Ga2 0 3' 3H2 0.
The,solubility of gallium oxide trihydrate was investigated
in soda and the results are given in figure 4. The concentration
equilibrium in the system gallate - carbon dioxide - water
was investigated at room temperature and the results are
summarized in tables 2 and 3. The solid phase of this system
has the componition NaGa(OH), C036H20. The radiographs of gallium

Investigation of the System Gallate - Carbon
Dioxide Water
SOV/78-4-6-37/44
oxide trihydrate and basic gallium carbonates were taken and
compared with the corresponding aluminum compounds (Fig 5 a - e).
The conditions for the production of double-basic sodium-gallium
carbonate were detected. The sodium gallate solution is added
at room temperature to the sodium bicarbonate solution in order
to produce basic sodium-gallium carbonate in crystalline state.
The formation of basic gallium carbonate proceeds probably
according to the reaction:
NaGa(OH)4+2NaHCO3- NaGa(OH)2 CO 3'H2O+Na2CO3+H20. A volumetric
method for the determination of the free alkalis ind bicarbonate
ions in gallate-soda solutions was suggested. There are 5
figures, 3 tables, and 8 references, 2 of which are Soviet.
ASSOCIATION: Ural'skiy filial Akademii Inauk SSSR institut khimii (Ural Branch
of the Academy of Sciences, USSR, Institute of Chemistry)
SUBMITTED: March 29, 1958
Card 2/2
P

TATSENKO, S.P.; MUMM, X.Y.
Isomorphous coprecipitation of gallium with aluminum
hydroxide from alloalina soltitions, Zhursneorg,khim,
5 no-7:1618-1625 Jl 160, (MIRA 13:7)
1. Urallskiy filial Akademii nauk SSSR. Inatitut khImii.
laboratoriya rodkikh elementove
(Gallium) (Aluminum hydroxide)

gallium with aluminum ~Ydrox'de during
CoprecipitatiOII Of alkaline Solution Zhur.neorg.
the CLrbonization of an ZMIRk 13-27)
khim. 5 no-7-.i626-1630 J1 160.
1. Ural .Iskiy filial AIkademii UaUk SSSR. Institut khimli-
Laboratoriya. redkikh elemOutOvs
(Ullium) (Alumi=m b7droxide)
50
A
Vf?l

S.
Precipitation of gallium with basic aluminum sodium carbonate.
Zhur. neorg. khIm. 5 no.B-.1882-1885 Ag 16o. WU 13:9)
1. Uraltskiy filial Akademij wak SSSR, Inatitut khimii.
(Gallium-Analysis) (Aluminum sodium carbonate)

-yATSr-,NKO, S.p DRU?HININA9 Ye,,P Zbur.neorg-kbim-
dissolubilitY Of mercurY 2nd (yIRA 14:8)
no.8-1902-:IgNf Ag 061.
(SlubilitY) (?4ercurY) (GA"'Um)
X-~
UILM
RON 'M
.4, 'NOR, IRM ist

YATSENKO, S.P.
Solubility isotherm of the system gallium oxide sulfuric anhydride
water at 200. Zhur.neorg.khim. 6 no.8:1922-1925 Ag '61,
(MIRA 14:8)
(Gallium oxide) (Sulfur trioxide)

DAMLOVt A.D,; YATSENK09 S.F.
Ionospheric intfrpretation of the results of radio astronomical
observations of Venue. Part 1, Geomage i aer. 3 no-4:585-591
JI-Ag 163.
4nospheric interpretatioj~'Of,--
-kY tWi4eaUlts of radio astronomical
observations of Venus. Pait"26 594-597 (MIRA 16:11)
1. Institut prikladnoy geofiziki All SSSR.,

YATSENKO JDRUZIiININA, Ye.P.
S.po*,.
dium-gallate solutions. TSvet. met
Density and viscosity of so (WRA 1~:8)
36 no.7t63,63 J1 163.
(solutions (Cheiid.ty)-Testing) (Gallate)

1; P41-11
ACCESSIOIj
MR: AT4042loo
nAUT110a.
Yat"enko, S. p. B/2768/63/000/00,7/0
TITLE: 147-/0150.
f romovin
SOL~RCU: AN SSS g impurities frOM metallic gallium
R. Urallski'
'ek'nOlOglya redkikh metalloy Y filial Inkitut khImil.
(Chemistry Trudy*
TopIC and tee no 2, 1963.
TAGs-
hnology Of
gal gallium, galijurn rar(i Iya I
metals), 147-150
Jiurn filtrailon,
gallium rec Purification, electr
rystallization olytic gallium
J ABSTRACT: A methodor metal filtration, molten
alkal
c urification o
'nO electrolysis in aepaluraizium in Minated me
hydrochloric aci f highly conta
i' met dv melting dustry tailic gallju
al. and subseque Is pr In produced b
B~ repeating treatment with 0. 5 nt filtration OPOsed Which consists of
Tnetall1c gallium Was _ I. 0 N and recrystallIzation of treating with
zinc, -5.6% aluminum Obtained fro acid four tim es in a laboratory p
m a material or the molten.
calcium, 0. 04% chroinjurA j.. se, 0. 2% tjt
Iginally conL11nin, ,% roce6a,
oil
v ~atcU~ - gallium,
and 1. 9$ ail magnesium, 0.
1/2 I%nkelt~whi
7%
ch are more
;!Zord-J
77~

now-
ACCESSION NR: AT4042100
negatiVe than gall
lurn are rein
oved fairly ell by the process while, those which
Positive, -such as lead, tin, 60 w
pper, nickel and trow: ore
techni are rn
are almost not removed at all. The
Cal details Of Purification by filtration, which"removoil Insoluble mechafilcal.im-
Purities, consist esso
11tiallY of heating th 'and recrysWlj~
0 metal wIth water to 40C"filtering the watery
through a glass filter (30 50 A pores) with auction"
temperature under water.
zing the-gallium at room
Otig. 'art. has; 3 tables'.
ASSOCIATION: Institut khtmit, ur4if
Of the Aq SSSR),
814hHai. AN SSSR (Chemical. institute, Ur~s Branch
SUBMITTED; 00
A:
ENCL: 00
SUB CODE: IC, Mm NO REP SOV: 003
OTHEW 004
'Card: -- ---- -.777----7~~
_g

-XCC NR- AT6023726 SOURCE CODEt UR/2831~65 f/6f4~6621 5
160~
AUTHOR: 1~alsenko, S. P.
ORG: none otl
TITLE: Ckemical processes in the Ionosphe
SOURCEi ANSSSR. Mezhduvedomfit,venn37goofizichosklykomitet.Vritzdolprogrommy
MGGz Ionosfera. Sbornik statey, no. 14, 1965. Ionoefornyye Iseledoyaniya, 21-25
TOPIC TAGS: Ionosphere, chemical composition, chemical process, atmospheric ton
concentration
ABSTRACT: This article discusses various theoretically possible Investigations of the
chemical processes occurring in the ionosphere the basic chemical reactions determining- -
the composition of the ionosphere are known, it is possible to find such relationships between-
low concentrations which should remain constant with a change of altitude, geomagnetic or
geographic latitude, time of day, and other parameters. An investigation of such chemical
invariants will yield valuable information on the properties of the Ionosphere. Therefore, the
present author examines the system of reactions proposed by A. D. D=Uov (Molekulyarnyye
iony v verkhney atmoofere, Dokl. AN SSSR. 1961, 137, No. 5, 1098). From this system of
Card 1/2

ACC NR, AT1113121
reactions the author derives three equalities from which three invariants are obtained:
[0+]I[NO+ I [ 02+ ] C N+]I[O'] [N+J, and [ NO+] [ Y']/[O'j [N2+]. lie latitude variation of
2 2
these invariants obtained from the data of measurements on Sputnik 3 are presented In figures.
Counter to expectations, the first two invariants do not remain constant but have a maximum
at about 550N. Consequently, the processes determining the concentration of molecular Ions
involve more than the examined system of chemical reactions. The maximum found coincides
geographtcaUy with one of the local anomalies of the outer radiation belt. This indicates that
the experimentally measured chemical composition changes with a change of Intensity of the
radiation of the outer radiation belt. Unfortunately, the experimental data were Insufficient
to make well-founded conclusions. The indicated results are mainly given to illustrate the
possibilities of using a rRdjo-frequency mass -spectrometer to tud th hemical composition
of the ionosphere. The realization of these possibilities c2raubs"tan1ealolly broaden the
knowledge about elementary chemical processes and about the properties of the ionoi;phere.
Orig. art. has: 3 figures.
SUB CODE; 04/ SU13M DATE: none/ ORIG REFI 013/ OTH REFx 002
Card 2/2 L)
'B~ nx.
6-1

J6 -Ml

AUTHORS: Yakhontov, L. IT., Yatsenko, S. Vos 79-26-5-9/69
Rubtsov,.M. V.

TITLEj Synthesis of Substituted quinuclidyl-2-Carbinol
(Sintez zameshchennykh khinuklidil-2-karbinolov)
PERIODICAL: Zhurnal Obahchey Khimii, 1958, Vol~ 28, Nr 5,
pp., 1177-1181 (USSR)
ABSTRACT: P. Rabe, in 1911 was the first to realize the synthesis
of the substituted quinualidyl-2-carbinols of the qui-
nine-alkaloidal type (Reference 1). This method consists
__sters of (~Cf-benzoyl-
of the condensation of the ethyl
_
piperidyl-(4))-proprionic acid and any other acid (e. g.
cinchoninic acid or quininic acid) Trith subsequent clo-
sing of the quinuclidine oyclev and by reduction of the
obtained ketone with the corresponding substituted qui-
nuelidyl-2-carbinol resulting as final product (see scheme
1). Until our time this scheme was the only one for the
synthesis of substituted quinuolidyl-2-oarbinole. Accor-
ding to this scheme quinine (Reference 2)9 hydroquinine
Card 1/2 (Reference 3) as vell as a series of analogs and isomers

Synthesis of Substituted r4uinuclidyl-2-Carbinol 79-28-5-9/69
of quinine alkaloids (References 4-6) were synthetized.
In the present work another method for the synthesis
)of substituted quinualidyl-2-carbinols is described (see
scheme 2). As initial product serves 2-formylquinualidine
(Reference 7) which in the conversion with different orga-
nomagnesium compounds forms the corresponding substituents
of quinuclidyl-2-carbinol. This way the following carbi-
nols were synthetizeds (quinuelidyl-2)-methylearbinol
(I , (quinuclidyl-2)-ethylearbinol (II) and (quinuclidyl-
-fl-(naphthyl-1-)-carbinol (III). The compound (1) was
also obtained by reduction of the 2-acetylquinuclidine
Reference 8) (IV) in the presence of a platinum catalyst
scheme 3), on which occasion also a mixture of diastereo-
~
isomeric (quinuelidyl-2).tmethylcarbinolEi formed in cry-
stalline and oily state.
There are 8 references, 5 of which are Soviet.
ASSOCIATION; Vaesoyuznyy nauohno-issledovatel'skiy khimiko-farmatsevti-
cheskiy institut imeni S. Ordzhonikidze (All-Union Scien-
tific Chemical and Pharmaceutical Research Institute imeni
Ordzhonikidze)
SUBMITTED: April 15, 1957
Card 2/2

AUTHORS: Yakhontov.L.11., 1hbtksov,k.V. SO'f/79-28-11-47/55
TITLE; Synthesis of 4-Aminopiperidine (Sintez 4-aminopiperidina)
PERIODICAL; Zhurnal obshchey khimii, 1958, Vol 28, Nr 119 PP 3115-3119 (USSR)
ABSTRACTs The 4-aminopiperidine is a semiproduct for the production of bio-
logically active compounds. According to-reference 1 some N-substi-
tuted 4-aminopiperidines have spasmolitic activity (Ref 1). There is,
however, no convenient synthesis of this compound mentioned in publi-
cations. Its two described syntheses by the reduction from 4-amino-
pyridine and from acyclia compounds Sive only small yields. In this
paper a convenient preparative synthesis of the dichloro hydrate of
4-aminopiperidine from isonicotinic acid in two steps with a yield
of 66 % is described. In its elaboration various ways of synthesizing
the 4-aminopiperidine from isonicotinio acid were checkedf which is
now used as industrial raw material (Scheme). The reactions by Hofmann,
Curtius,and Schmidt (Gofman,Kurtsius,Shmidt) were used for the trans-
formation of the carboxyl group. According to the first method the
isonicotinic acid according to reference 4 was converted by way of the
ester into the amide and further on according to Hofmann into the
aminopiperidine. 3asing on the second method the isonicotinic acid
Card 1/3 was converted into hydrazide according to reference 6 by way of the
A i_

Synthesis,of 4-Amizxopiperidine SOV/79-28-11-47/55
ester. This was reduced by way of platinum to the hydrazide of the
isonipecotio acid, which according to Curtiua was converted to the
4-aminopiperidine. The synthesis by the reduction of the ison-icotinic
acid to the isonipecotic acid with subsequent substitution of the
carboxyl group by the amino group according to Schmidt turned out to
be the most oonvenient method. The Schmidt reaction takes place best
with sodium azide in the presence of H 2so 49 as it is convenient in
preparative respect and is not connected with a previous development
of poisenous vapours of hydrazoic acids (yield 66 %) as is the case
in-using hydrazoic acid. In the checking of the first method accord-
ing to Hofmann the catalytic reduction of the aminopyridine to the
4-aminopiperidine was realized.- There are 8 references, 1 of whi-ch
is Soviet.
ASSOCIATION: Vsesoyuznyy nauchno-issledovatel'skiy khimiko-farmatsevticheskiy
institut imeni S.Ordzhonikidze (All-Union Scientific Chemo-Pharma-
ceutical Research Instituteimeni S.Ordzhonikidze)
Card 2/3

BMIIFELIP,, VA~ YA&IUOIITGV,, LA, YAIIDUK!JTTN, KIWIIOKLUSKAYA, DJ4.~
Synthesis of substit,).ted -,die thy3.wd.nc~-c,